423612561 has 8 divisors (see below), whose sum is σ = 564933600. Its totient is φ = 282349952.

The previous prime is 423612557. The next prime is 423612583. The reversal of 423612561 is 165216324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423612561 - 2² = 423612557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423612521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6790 + ... + 29888.

It is an arithmetic number, because the mean of its divisors is an integer number (70616700).

Almost surely, 2^423612561 is an apocalyptic number.

It is an amenable number.

423612561 is a deficient number, since it is larger than the sum of its proper divisors (141321039).

423612561 is a wasteful number, since it uses less digits than its factorization.

423612561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29215.

The product of its digits is 8640, while the sum is 30.

The square root of 423612561 is about 20581.8502812551. The cubic root of 423612561 is about 751.0282553880.

Adding to 423612561 its reverse (165216324), we get a palindrome (588828885).

The spelling of 423612561 in words is "four hundred twenty-three million, six hundred twelve thousand, five hundred sixty-one".